Stress-free temperature in a mixed-adhesive joint

摘要: Adhesive joints used in supersonic aircraft fuselage need to withstand low (−55°C), as well high (200°C) temperatures. However, there are no adhesives suitable for the whole temperature range. A solution would be a joint with combination of low-temperature adhesive and high-temperature adhesive, called mixed-adhesive joint. In bonded joint, thermal stresses generated essentially by different expansion properties adherends and, lesser extent, shrinkage produced curing. The case is more complicated because two glass transition temperatures (T g). To determine stress-free mixed sandwich specimens aluminium–adhesive–CFRP (carbon-fibre-reinforced plastic) were fabricated strains measured strain gauges. found: of...